Anti-depression mechanism of Zuojin Pills:based on UHPLC-TOF-MS, network pharmacology, and experimental verification / 中国中药杂志

This study aims to explore the anti-depression mechanism of Zuojin Pills based on the plasma constituents, network pharmacology, and experimental verification. UHPLC-TOF-MS was used for qualitative analysis of Zuojin Pills-containing serum. Targets of the plasma constituents and the disease were retrieved from PharmMapper and GeneCards. Then the protein-protein interaction(PPI) network was constructed and core targets were screened for GO term enrichment and KEGG pathway enrichment. Cytoscape 3.7.2 was employed construct the "compound-target-pathway" network and the targets and signaling pathways of Zuojin Pills against depression were predicted. CUMS-induced depression mouse model was established to verify the key targets. The results showed that a total of 21 constituents migrating to blood of Zuojin Pills were identified, which were mainly alkaloids. A total of 155 common targets of the constituents and the disease and 67 core targets were screened out. KEGG enrichment and PPI network analysis showed that Zuojin Pills may play a role in the treatment of depression through AMPK/SIRT1, NLRP3, insulin and other targets and pathways. Furthermore, the results of animal experiments showed that Zuojin Pills could significantly improve the depression behaviors of depression, reduce the levels of IL-1β, IL-6 and TNF-α in hippocampus and serum, activate AMPK/SIRT1 signaling, and reduce the protein expression of NLRP3. In conclusion, Zuojin Pills may play a role in the treatment of depression by activating AMPK/SIRT1 signaling pathway, and inhibiting NLRP3 activation and neuroinflammation in the hippocampus of mice.

Study on the influence of sex on age-related changes in renal function / 中华老年医学杂志

Objective:To evaluate the influence of sex on age-related changes in the glomerular filtration rate(GFR)in healthy individuals.Methods:A retrospective survey was performed.A total of 36 911 healthy subjects, of whom 43.61%(16 096 cases)were men, were enrolled and divided into six age groups: 18-29, 30-39, 40-49, 50-59, 60-69, and ≥70 years old.The estimated glomerular filtration rate(eGFR)was evaluated by the full age spectrum(FAS)equation.General linear regression analysis was used to calculate the annual decline rate of eGFR, and differences between the sexes in the same age group were evaluated using analysis of covariance.The chi-square test was used to compare the proportions of subjects with different eGFR levels between the sexes.Results:Regardless of sex, body mass index(BMI), systolic blood pressure(SBP)and fasting blood glucose(FBG)all increased gradually with age, while diastolic blood pressure(DBP)increased initially and then turned downward.The means of above results in men were generally higher than those in women of the same age.Before the age of 40, the levels of eGFR in men and women were relatively stable, with the mean eGFR in women higher than that in men[(121.98±16.77)ml·min -1·1.73 m -2vs.(111.01±13.36)ml·min -1·1.73 m -2, t=-53.793, P=0.000]; After the age of 40, eGFR decreased with age in both sexes, and the decline rate of eGFR in women was faster than that in men before the age of 70.Men had generally higher mean serum creatinine(Scr), blood urea nitrogen(BUN)and serum uric acid(UA)than women.With the increase of age, BUN levels increased gradually in men and women, but Scr levels started to increase after the age of 40 only in women and did not show a clear increase in men. Conclusions:There are sex-related differences with aging, as measured with many parameters.Young and middle-aged women have significantly higher eGFR than men of the same age, but eGFR declines faster with aging in women.

Effect of Helicobacter pylori infection on standard dose of postoperative thyrotropin suppression therapy for differentiated thyroid cancer / 中华内分泌外科杂志

Objective:To study the effect of Helicobacter pylori (HP) infection on the standardized dose of postoperative thyrotropin suppression of differentiated thyroid carcinoma.Methods:A total of 82 patients diagnosed with differentiated thyroid carcinoma and receiving total thyroidectomy in Beijing Rehabilitation Hospital affiliated to Capital Medical University from Jan. 2019 to Jun. 2020 were enrolled in this study prospectively.19 patients with higher standardized dose of the thyrotropin suppression (>2.5 μg·kg -1·d -1) were selected as the experimental group, and 63 patients with the lower standardized dose of the thyrotropin suppression (≤2.5 μg·kg -1·d -1) were selected as the control group. The presence of HP infection was measured by C13 method, and the HP infection rate was compared between the two groups. The patients with HP infection in the experimental group received standard quadruple therapy to eradicate Helicobacter pylori. The standardized dose before and after treatment were observed and compared. Results:The HP infection rate in the experimental group (73.7%, 14/19) were significantly higher ( P<0.05) than those in the control group (31.7%, 20/63). In the experimental group, 14 patients with HP infection in the experimental group received standard quadruple therapy to eradicate HP. HP was successfully eradicated in 11 patients after the treatment (one patient quit the treatment before completion, the actual eradication rate was 84.6%) ; Eight weeks after the treatment, the dose adjustment of thyrotropin suppression reached steady-state in 13 patients completed the therapy. The average standardized dose was (2.15±0.25) μg·kg -1·d -1, significantly lower than that before treatment [ (2.89±0.21) μg·kg -1·d -1] ( P<0.05) . Conclusions:HP infection may be an important factor affecting the standardized dose of thyrotropin suppression in postoperative patients with thyroid cancer. For those patients with HP infection, eradication treatment of HP can significantly reduce the standardized dose and treatment-related complications.

Material Basis and Mechanism of Epimedii Folium Against Osteoporosis Based on Spectrum-Effect Relationship and Network Pharmacology / 中国实验方剂学杂志

Objective:To study the material basis and potential molecular mechanism of Epimedii Folium against osteoporosis. Method:The chemical components in 14 batches of Epimedii Folium were analyzed by ultra-performance liquid chromatography-quadrupole-time of flight-tandem mass spectrometry （UPLC-Q-TOF-MS/MS）. With the activity of alkaline phosphatase （ALP） as the pharmacodynamic index，the partial least squares regression analysis （PLSR） was conducted to establish a model uncovering the spectrum-effect relationship between UPLC-Q-TOF-MS/MS spectral peak and ALP activity and screen the active components against osteoporosis. Online databases such as the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform （TCMSP），Comparative Toxicogenomics Database （CTD），Database for Annotation，Visualization，and Integrated Discovery （DAVID） and Cytoscape 3.6.1 were employed to predict the possible mechanism of action of Epimedii Folium against osteoporosis. Result:A total of 61 peaks and 56 compounds were identified by UPLC-Q-TOF-MS/MS. PLSR showed that icariin，baohuoside Ⅰ，epimedin A，sagittatoside A，and baohuoside Ⅱ might be the active components for Epimedii Folium to inhibit osteoporosis considering their strong correlation with ALP activity. As revealed by the network pharmacological analysis of the five components mentioned above，Epimedii Folium<italic> </italic>mainly regulated seven targets such as tumor necrosis factor （TNF），androgen receptor （AR），and estrogen receptor 1 （ESR1） and eight key pathways like endocrine and other factor-regulated calcium reabsorption，vascular endothelial growth factor （VEGF） signaling pathway，and transient receptor potential （TRP） channels to exert its anti-osteoporosis effect. Conclusion:The exploration of material basis and potential molecular mechanism of Epimedii Folium against osteoporosis based on UPLC-Q-TOF-MS/MS，spectrum-effect relationship，and network pharmacology has provided an experimental basis for the scientific explanation and clinical application of Epimedii Folium in treating osteoporosis.

Study on the scheme of intrauterine insemination in patients with unexplained infertility / 中国医师进修杂志

Objective:To investigate the effect of different schemes of intrauterine insemination (IUI) on pregnancy outcome in patients with unexplained infertility.Methods:The clinical data of 393 cases (934 cycles) with unexplained infertility patients who underwent IUI from March 2016 to August 2018 in Dalian Maternal and Child Health Hospital were retrospectively analyzed. The patients were divided into natural cycle group (402 cycles) and promote ovulation cycle group (532 cycles). In promote ovulation cycle group, the patients were divided into clomiphene (CC) subgroup (124 cycles), letrozole (LE) subgroup (107 cycles), menotropins (HMG) subgroup (87 cycles), CC + HMG subgroup (103 cycles), LE + HMG subgroup (111 cycles). The pregnancy outcomes of each group were compared.Results:The clinical pregnancy rate and live birth rate in promote ovulation cycle group were significantly higher than those in natural cycle group: 14.10% (75/532) vs. 9.20% (37/402) and 11.28% (60/532) vs. 7.21% (29/402), and there were statistical differences ( P<0.05). There were no statistical differences in abortion rate, ectopic pregnancy rate and twin pregnancy rate between 2 groups ( P<0.05). Ovarian hyperstimulation syndrome occurred in 7 cycles, all of which were in CC + HMG subgroup. The clinical pregnancy rate and live birth rate in LE subgroup, HMG subgroup, CC + HMG subgroup and LE + HMG subgroup were significantly higher than those in CC subgroup: 11.21% (12/107), 13.79% (12/87), 16.50% (17/103), 21.62% (24/111) vs. 8.06% (10/124) and 7.48% (8/107), 11.49% (10/87), 13.59% (14/103) and 20.72% (23/111) vs. 4.03% (5/124), the abortion rate was significantly lower than that in CC subgroup: 3/12, 1/12, 2/17 and 1/24 vs. 5/10; the clinical pregnancy rate and live birth rate in HMG subgroup, CC + HMG subgroup and LE + HMG subgroup were significantly higher than those in LE subgroup, the abortion rate was significantly lower than that in LE subgroup, and there were statistical differences ( P<0.05). Conclusions:When the patients with unexplained infertility are assisted by IUI, LE combined with HMG ovulation induction can achieve a better pregnancy outcome.

Effect of self-made Qingyuan Shenghua decoction on coagulation dysfunction in patients with sepsis / 中华危重病急救医学

Objective:To observe the effects of self-made Qingyuan Shenghua decoction on coagulation dysfunction in patients with sepsis, and to explore its possible mechanism.Methods:Eighty patients with sepsis and coagulation dysfunction admitted to the department of critical care medicine of Chengdu First People's Hospital from March 2018 to April 2020 were enrolled. The patients were divided into control group and observation group according to random number table method, with 40 cases in each group. Patients in both groups received basic treatment for sepsis. On this basis, the observation group was administrated with self-made Qingyuan Shenghua decoction, one dose a day, 100 mL in the morning and 100 mL in the evening; the control group was given the same amount of normal saline. Both groups were treated for 7 days. Prothrombin time (PT), activated partial thromboplastin time (APTT), international normalized ratio (INR), fibrinogen (Fib), D-dimer, platelet count (PLT), white blood cell count (WBC), C-reactive protein (CRP), and procalcitonin (PCT) were measured before and after treatment, and acute physiology and chronic health evaluation Ⅱ (APACHEⅡ) and sequential organ failure assessment (SOFA) were calculated. The length of intensive care unit (ICU) stay, the incidence of multiple organ dysfunction syndrome (MODS) and 28-day mortality was recorded.Results:The indexes of coagulation function and inflammation in the two groups were significantly improved after treatment, the improvement of various indexes in the observation group were better than those in the control group [PT (s): 16.01±1.08 vs. 19.21±1.38, APTT (s): 55.33±15.29 vs. 79.41±12.69, INR: 1.30±0.21 vs. 1.65±0.22, Fib (g/L): 2.87±0.89 vs. 5.44±1.13, D-dimer (mg/L): 2.56±1.67 vs. 6.41±2.42, PLT (×10 9/L): 125.79±18.51 vs. 95.46±18.50, WBC (×10 9/L): 7.50±0.78 vs. 12.75±4.09, CRP (mg/L): 21.27±9.32 vs. 65.44±13.40, PCT (μg/L): 1.15±0.58 vs. 6.31±1.29], and the differences were statistically significant (all P < 0.05). After treatment, APACHEⅡ and SOFA scores in the two groups decreased significantly compared with those before treatment, and the decrease in the observation group were more obvious than those in the control group (APACHEⅡ score: 10.29±1.86 vs. 15.35±2.06, SOFA score: 5.51±1.08 vs. 7.65±1.58, both P < 0.05). The length of ICU stay was shortened in the observation group than that in the control group (days: 12.22±9.48 vs. 20.22±15.35, P < 0.05). The incidence of MODS [35.0% (14/40) vs. 47.5% (19/40)] and the 28-day mortality [45.0% (18/40) vs. 47.5% (19/40)] was lower than that of the control group, but there was no statistical difference (both P > 0.05). Conclusion:Self-made Qingyuan Shenghua decoction can effectively improve the prognosis of patients with coagulation dysfunction and sepsis, and its mechanism may be related to inhibition of inflammatory reaction and improvement of coagulation function.

Analysis of the development environment of public hospitals in China during the 14th Five-Year Plan period based on the PEST model / 中华医院管理杂志

During the 14th Five-Year Plan period, China′s public hospitals are facing important development opportunities as well as many difficulties and challenges. Using PEST model, this study analyzed the macro-environmental factors of the development of public hospitals in China from four aspects: political environment, economic environment, social environment and technological environment. The authors proposed relevant countermeasures and suggestions to promote the high-quality development of public hospitals, including implementing functional positioning and promoting differentiated and synergistic development, strengthening operation management and enhancing the capacity for high-quality development, and building smart hospitals and stimulating new efficiency in service management.

Effects of Jiaotai Pills on CUMS-induced depression model in mice based on changes of SIRT1 expression in hippocampus / 中国中药杂志

The present study investigated the effects and mechanisms of Jiaotai Pills on depressed mice induced by chronic unpredictable mild stress(CUMS). The CUMS-induced depression model mice were established and the depression behaviors of mice were evaluated by sucrose preference test, open field test, tail suspension test, and forced swimming test. Molecular docking was employed to simulate the interaction of six main active ingredients in Jiaotai Pills with SIRT1. Immunohistochemical staining was used to detect the level of SIRT1 in the hippocampus of mice. Western blot was used to detect the protein expression levels of SIRT1, p-NF-κB p65, NF-κB p65, and FoxO1 in the hippocampus of mice. Enzyme-linked immunosorbent assay(ELISA) kits were used to detect the levels of interleukin(IL)-1β, IL-6, tumor necrosis factor-α(TNF-α), and brain-derived neurotrophic factor(BDNF) in the hippocampus and serum of mice. Biochemical kits were used to detect superoxide dismutase(SOD) activity and malondialdehyde(MDA) and glutathione(GSH) levels in the hippocampus and serum of mice. Liquid chromatography-tandem mass spectrometry(LC-MS/MS) was used to detect the levels of dopamine(DA), 5-hydroxytryptamine(5-HT), and norepinephrine(NE) in the hippocampus and serum of mice. The results showed that the sucrose preference rate, movement distance, and the number of crossing centers were reduced in the model group(P<0.01), and the tail suspension time and swimming immobility time were increased(P<0.01). Molecular docking results indicated good binding of six main active ingredients in Jiaotai Pills to SIRT1. In the hippocampus, the expression level of SIRT1 was reduced(P<0.01), and the levels of p-NF-κB p65/NF-κB p65 and FoxO1 were increased(P<0.01). In the hippocampus and serum, the levels of IL-1β, IL-6, TNF-α, and MDA were increased(P<0.01), and the activity of SOD and the levels of GSH, DA, 5-HT, NE, and BDNF were reduced(P<0.01). The treatment with high-dose Jiaotai Pills increased the sucrose preference rate, movement distance, and the number of crossing centers(P<0.05), reduced tail suspension time and swimming immobility time(P<0.01), elevated hippocampal SIRT1 expression level(P<0.01), decreased hippocampal and serum IL-1β, IL-6, TNF-α, and MDA levels(P<0.01), potentiated SOD activity, and up-regulated GSH, DA, 5-HT, NE, and BDNF levels in the hippocampus and serum(P<0.05, P<0.01) in model mice. In conclusion, the results showed that Jiaotai Pills could improve the depression behaviors of model mice with CUMS-induced depression, and the underlying mechanism was related to the up-regulation of SIRT1 in the hippocampus of mice to exert anti-inflammatory and anti-oxidative stress effects.

Effects of TNF-α knockout on liver and spleen neutrophil responses to Vibrio vulnificus bloodstream infection in a mouse model / 中华微生物学和免疫学杂志

Objective:To investigate the effects of TNF-α knockout on liver and spleen neutrophil responses to Vibrio vulnificus bloodstream infection in a mouse model. Methods:(1) TNF-α-knockout (TNF-α -/-) and wild-type (WT) C57BL/6J mice aged 6-8 weeks were randomly divided into four groups with six in each group: uninfected WT group, infected WT group, uninfected TNF-α -/- group and infected TNF-α -/- group. The mouse model of bloodstream infection was constructed by intraperitoneal injection of Vibrio vulnificus CGMCC1.1758 (2×10 8 CFU/200 μl), while the mice in the uninfected groups were injected intraperitoneally with equal amount of PBS. (2) Liver immune cells and splenocytes were isolated 4 h after infection and subjected to analyze the percentages and numbers of neutrophils, and the changes in cell viability, cellular reactive oxygen species (ROS) level and phagocytosis by flow cytometry. In addition, effects of Vibrio vulnificus bloodstream infection on mTOR signaling pathway in murine neutrophils were evaluated in vivo. Results:(1)Compared with the uninfected WT group, the percentages and numbers of neutrophils in liver and spleen tissues of the infected WT group increased significantly. The percentage and number of liver neutrophils were significantly higher in the infected TNF-α -/- group than in the infected WT group, but no significant difference in spleen neutrophils was detected between the two groups. (2) Compared with the infected WT group, the phagocytosis of liver neutrophils rather than that of spleen neutrophils was enhanced in the infected TNF-α -/- group. (3) The survival rates of neutrophils in both liver and spleen were decreased, while the cellular ROS level was significantly increased in the infected WT group compared with those of the uninfected WT group. Compared with the infected WT group, the infected TNF-α -/- group had increased survival rates of both liver and spleen neutrophils, but decreased level of ROS. (4) The levels of p-AKT (S473) in liver and spleen neutrophils of the infected WT group were lower than those of the uninfected WT group. Compared with the infected WT group, the infected TNF-α -/- group had lower level of p-AKT (S473) in liver neutrophils, but higher p-AKT (S473) level in spleen neutrophils. There were no significant differences in p-4E-BP1(T37/46) levels between the uninfected WT group and the infected WT group. The p-4E-BP1 (T37/46) level in liver neutrophils was lower in the infected TNF-α -/- group than in the infected WT group, but no significant difference in p-4E-BP1 (T37/46) levels in spleen neutrophils was observed between the two groups. Conclusions:TNF-α had different effects on the neutrophils in spleen and liver tissues of mice with Vibrio vulnificus bloodstream infection. It played a critical role in regulating the recruitment, phagocytic function and mTOR signaling of liver neutrophils after Vibrio vulnificus infection in vivo.

Eight new cytotoxic annonaceous acetogenins from the seeds of Annona squamosa / 中国天然药物

Eight new annonaceous acetogenins, squamotin A-D (1-4), annosquatin IV-V (5 and 6), muricin O (7) and squamosten B (8), together with four known ones (9-12) were isolated from the seeds of Annona squamosa. Their structures were elucidated by chemical methods and spectral data. The inhibitory activities of compound 1-9 against three multidrug resistance cell lines were evaluated. All tested compounds showed strong cytotoxicity.

Bone morphogenetic proteins and inner ear development / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Bone morphogenetic proteins (BMPs) are the largest subfamily of the transforming growth factor-β superfamily, and they play important roles in the development of numerous organs, including the inner ear. The inner ear is a relatively small organ but has a highly complex structure and is involved in both hearing and balance. Here, we discuss BMPs and BMP signaling pathways and then focus on the role of BMP signal pathway regulation in the development of the inner ear and the implications this has for the treatment of human hearing loss and balance dysfunction.

Optimization of Water Extraction Technology of Taohe Chengqi Decoction by Response Surface Methodology Combined with Information Entropy Theory / 中国药房

OBJECTIVE： To optimize the water extraction technology of classic formula Taohe chengqi decoction. METHODS： Based on single factor test， combined with response surface methodology and information entropy theory， the soaking time， solid-liquid ratio and extraction time were investigated. Using the contents of rhein， amygdalin， cinnamaldehyde and glycyrrhizic acid in Taohe chengqi decoction as indexes， information entropy theory was used to assign weight coefficients to each evaluation index and calculate the comprehensive score. Through Design-Expert 10 software， the interactions of each factor were analyzed. Water extraction technology was optimized， and validation test was also performed. RESULTS： According to information entropy theory， the weight coefficients of rhein， amygdalin， glycyrrhizic acid and cinnamaldehyde were located at 0.097 6， 0.363 2， 0.173 5 and 0.365 7. The results of interaction analysis showed that the material-liquid ratio had a greater impact on the comprehensive score. The optimal water extraction technology of Taohe chengqi decoction were determined as that soaking time was 60 min； the ratio of material to liquid was 1 ∶ 10 （g/mL）； total extraction time was 130 min （extracting for 3 times， lasting for 65， 33， 32 min each time）. The results of verification test showed that RSD of content of each index component and the comprehensive score was less than 3％. CONCLUSIONS： The optimal water extraction technology is proved to be stable and feasible， which can provide the basis for the further development and utilization of Taohe chengqi decoction.

Effect of yueju pill on depressive-like behavior and neurogenesis in corticosterone induced mice / 中国药理学通报

Aim: To investigate the effects of Yueju pill on depressive-like behavior and neurogenesis in chronic corticosterone (CORT) induced mice. Methods: Male C57BL/6N mice received chronic administration of CORT as well as Yueju pill. Behavioral tests were performed after the completion of treatment. The number of Ki67+ cells in the hippocampal DG region of each group was counted by immunohistochemistry test. Meanwhile, the expression levels of PKA, ERK and CREB were detected by Western blot. Results: The sucrose preference notably decreased (P < 0. 05) in CORT-induced mice in SPT, and it was raised obviously after Yueju treatment. The TST and NSF test displayed the similar results. The immunohistochemistry showed that the number of Ki67+ cells in the hippocampus DG significantly decreased in CORT-induced mice, while the number of Yueju group apparently increased (P < 0. 05). Western blot showed that compared with control group, the protein expressions of PKA-ERK-CREB pathway were down-regulated in CORT-induced mice, which were up-regulated after Yueju treatment (P < 0. 05). Conclusions: In CORT induced mice, Yueju pill can enhance the hippocampal neurogenesis by activating the PKA-ERK-CREB signaling pathway to display antidepressant-like effect.

An innovative three-dimensional method for identifying a proper femoral intramedullary entry point in total knee arthroplasty / 中华医学杂志(英文版)

<p><b>Background:</b>Identification of the proper femoral intramedullary (IM) access point is an important determinant of final implant position in IM-guided total knee arthroplasty (TKA). The aim of this study was to identify the optimal entry point in Chinese participants using a new three-dimensional method.</p><p><b>Methods:</b>A series of computed tomography scans of 44 femurs in Chinese participants from October 2014 to October 2015 were imported into Mimics 17.0 software to identify the optimal entry point. The apex of the intercondylar notch (AIN) was used as the reference bony anatomical landmark to identify the proper entry point to insert the IM rod. The statistical significance was calculated on the basis of a 5% level (P < 0.05) using the Student's t-test.</p><p><b>Results:</b>For the males, the average ideal entry point was 1.49 mm medial and 13.39 mm anterior to the AIN. The values were 1.77 mm medial and 15.29 mm anterior to the AIN in females. A significant difference was present between males and females (13.39 ± 2.46 mm vs. 15.29 ± 3.44 mm, t = 2.124, P = 0.040). When using the recommended location as the entry point for the IM rod, the mean potential error differed significantly from the femoral trochlear groove (the potential error of IM in males in coronal plane: 0.93° ± 0.24° vs. 1.27° ± 0.32°, t = -4.166, P <0.001; the potential error of IM in males in sagittal plane: 1.40° ± 0.42° vs. 2.79° ± 0.70°, t = 7.155, P < 0.001; the potential error of IM in females in coronal plane: 0.73° ± 0.28° vs. 1.15° ± 0.35°, t = 3.940, P < 0.001; and the potential error of IM in females in sagittal plane: 1.48° ± 0.47° vs. 2.76° ± 0.83°, t =5.574, P < 0.001). A significant difference was present between the recommended point and the point 10 mm anterior to the origin of the posterior cruciate ligament (the potential error of IM in males in coronal plane: 0.93° ± 0.24° vs. 1.53° ± 0.43°, t = 5.948, P < 0.001; the potential error of IM in males in sagittal plane: 1.40° ± 0.42° vs. 2.15° ± 0.75°, t = 3.152, P = 0.003; the potential error of IM in females in coronal plane: 0.73° ± 0.28° vs. 1.28° ± 0.42°, t = -4.632, P < 0.001; and the potential error of IM in females in sagittal plane: 1.48° ± 0.47° vs. 2.40° ± 0.93°, t = 3.763, P = 0.001).</p><p><b>Conclusions</b>The technique described here is an innovative method for swift, easy, and accurate access to the medullary canal during TKA, and it can optimize the position and orientation of the prosthetic components in knee arthroplasty.</p>

Research Progress of Desialylation in Immune Thrombocytopenia -Review / 中国实验血液学杂志

Some patients diagnosed as immune thrombocytopenia(ITP) have poor response to common first-line therapy such as corticosteroid and immunoglobulin. Studies in recent years have found a FC-independent platelet clearance pathway exists, which is characterized by desialylation of platelet surface glycoprotein(GP), recognition and phagocytosis by Ashwell-Morell receptor(AMR) on hepatocytes, independent on Fc receptors of the reticuloendothelial system. The up-regulation of neuraminidase-1(Neu1) expression on platelet caused by various factors, such as cold storage of platelet, septicemia and ITP could desialylate GPs. It has been found that ITP with positive anti-GPIbα antibody mostly has a poor response to first-line therapy and indicated that such antibody may lead to FC-independent platelet clearance. It also has been proved that anti-GPIbα antibody could desialylate GPs on platelet in animal experiments. Researchers have tris to use sialidase inhibitor agent to treat ITP and got a persistent response of platelet. Here, the desialylation of platelet and its role in ITP pathogensis and therapy are reviewed.

Study of event-related potentials based on Flanker task in adolescent addicted to smoking / 中华行为医学与脑科学杂志

Objective To investigate the change of the error positivity(Pe)of event-related poten-tial(ERP)under Flanker task in adolescents with smoking addiction. Method The signals of ERP during the Flanker task in fifteen adolescents with smoking addiction were compared with that of 15 non-smoking ad-olescents. Results The Pe amplitude in adolescents with smoking addiction((3.575±2.299)μV)was sig-nificantly lower than that of non-smokers((5.865 ± 4.290)μV)(F=5.324,P=0.029),and the reaction time of the Flanker task in smoking addiction adolescent group((440.754± 36.051)ms)was significantly higher than that in the control group((422.850±20.194)ms)(F=0.620,P<0.05).The Pe amplitude in ado-lescents with smoking addiction was positively correlated with smoking index(pack-years)(r=0.599,P=0.018). Conclusion The adolescents with smoking addiction may exit worse ability of error monitoring dur-ing the Flanker task.

Glycosaminoglycan Content of the Lateral Compartment Cartilage in Knees Conforming to the Indications for Oxford Medial Unicompartmental Knee Arthroplasty / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>The quality of the lateral compartment cartilage is important to preoperative evaluation and prognostic prediction of unicompartmental knee arthroplasty (UKA). Delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) enables noninvasive assessment of glycosaminoglycan (GAG) content in cartilage. This study aimed to determine the GAG content of the lateral compartment cartilage in knees scheduled to undergo Oxford medial UKA.</p><p><b>METHODS</b>From December 2016 to May 2017, twenty patients (20 osteoarthritic knees) conforming to the indications for Oxford medial UKA were included as the osteoarthritis (OA) group, and 20 healthy volunteers (20 knees) paired by sex, knee side, age (±3 years), and body mass index (BMI) (±3 kg/m2) were included as the control group. The GAG contents of the weight-bearing femoral cartilage (wbFC), the posterior non-weight-bearing femoral cartilage (pFC), the lateral femoral cartilage (FC), and tibial cartilage (TC) were detected using dGEMRIC. The dGEMRIC indices (T1Gd) were calculated in the middle three consecutive slices of the lateral compartment. Paired t-tests were used to compare the T1Gd in each region of interest between the OA group and control group.</p><p><b>RESULTS</b>The average age and BMI in the two groups were similar. In the OA group, T1Gd of FC and TC was 386.7 ± 50.7 ms and 429.6 ± 59.9 ms, respectively. In the control group, T1Gd of FC and TC was 397.5 ± 52.3 ms and 448.6 ± 62.5 ms, respectively. The respective T1Gd of wbFC and pFC was 380.0 ± 47.8 ms and 391.0 ± 66.3 ms in the OA group and 400.3 ± 51.5 ms and 393.6 ± 57.9 ms in the control group. Although the T1Gd of wbFC and TC tended to be lower in the OA group than the control group, there was no significant difference between groups in the T1Gd in any of the analyzed cartilage regions (P value of wbFC, pFC, FC, and TC was 0.236, 0.857, 0.465, and 0.324, respectively).</p><p><b>CONCLUSIONS</b>The GAG content of the lateral compartment cartilage in knees conforming to indications for Oxford medial UKA is similar with those of age- and BMI-matched participants without OA.</p>

Application of UTMD mediated microRNA transfection in disease treatment / 医学研究生学报

In recent years, research about microRNA has been increasing.How to safely and effectively introduce microRNA into target cells and target tissues is the key to successful treatment of diseases using microRNA.Many studies have reported that ultrasound-targeted microbubble destruction technology (UTMD) mediated gene transfection has the advantages of safety, targeting and high transfection efficiency.The research of UTMD mediated microRNA transfection has also increased year by year.The mechanism of UTMD mediated microRNA transfection and the application in the treatment of diseases such as cancer and cardiovascular system are reviewed in this paper.

Application of VEGFR in tumor ultrasound molecular imaging / 天津医药

Ultrasound molecular imaging has become one of the hotspots of molecular imaging because of its advantages of non-invasion, non-radiation, repeatability and real-time dynamic imaging. The key of imaging is to select the appropriate target and ligand to bind to the ultrasound contrast agent. The formation of blood vessels in the development of tumor is a significant feature. Vascular endothelial growth factor receptor (VEGFR) is an important specific molecule on tumor vascular endothelial cells, and which can be used as a target for tumor ultrasound imaging. In recent years, many scholars have carried out related studies on the imaging of ultrasound molecules targeting VEGFR. This paper reviewed the mechanism and application of tumor ultrasound molecular imaging with VEGFR as target in recent years.

The changes of EEG signals during resting state in adolescents with smoking addiction / 中华行为医学与脑科学杂志

Objective To observe the changes of electroencephalogram (EEG) signal during the resting state in adolescents with smoking addiction.Methods Spectral analysis during the resting state was used to observe and analyze the EEG signals between adolescents with smoking addiction (n=21) and nosmoking control group (n=21) by using Brain Vision Analyzer software.Results Compared with the nosmoking control group,adolescents with smoking addiction showed increased alpha band signals in 3 brain regions (including left-anterior,right-anterior and midline-anterior regions,P＜0.05),and decreased delta band signals in 3 brain regions (including right-posterior,midline-anterior and midline-posterior regions,P＜0.05).Moreover,the signals in these brain regions were positively correlated with pack-years (alpha band:left-anterior(r=0.648,P=0.003),right-anterior (r=0.629,P=0.004),midline-anterior (r=0.456,P=0.043);delta band:right-posterior (r=0.602,P =0.005),midline-anterior (r =0.533,P=0.019),midline-posterior (r=0.692,P=0.001))in adolescents with smoking addiction.Conclusion The changes of EEG signals during the resting state in adolescents with smoking addiction may be associated with cumulative effects of smoking.